As a major hostage operation plays out in the centre of Sydney, Uber briefly reached record surge pricing for rides in the CBD, before changing tack and offering free rides for passengers trying to leave the city.

Sydney's famous Harbour Bridge becomes a giant interactive light show every night as part of Vivid Festival, covered in LEDs controlled by viewers on the ground. Boats on the harbour complement the colourful show with lights that change colour based on GPS location data.